Unnamed (south tributary to East Fork, Iron Creek)

Prospect in Alaska, United States with commodities Copper, Tin

Geologic information

Identification information

Deposit ID 10001434
MRDS ID A012182
Record type Site
Current site name Unnamed (south tributary to East Fork, Iron Creek)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -148.82272, 62.32958 (WGS84)
Relative position 1 mile south of the East Fork of Iron Creek, 2.5 miles south-southwest of VABM Sedan. Locality 65 of Csejtey and Miller (1978) and locality 65 of Singer and others (1978). Accurate within 2,000 feet.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Tin Secondary

Materials information

Materials Type of material
Malachite Ore
Pyrite Ore
Quartz Gangue

Alteration

  • (Local) Oxidation of Cu-minerals.

Nearby scientific data

(1) -148.82272, 62.32958

Comments on the geologic information

  • Geologic Description = Float sample of vein quartz contained pyrite and malachite staining. Bedrock is Tertiary volcanic rocks, felsic and mafic subaerial volcanic rocks and related shallow intrusions. Nearby, at a lower elevation, is a Jurassic plutonic and metamorphic unit consisting of mainly quartz diorite, granodiorite, amphibolite, and greenschist. Analysis of the float sample yielded 1,500 ppm Cu and less than 10 ppm Sn (Miller and others, 1978).
  • Age = Probably Tertiary or younger, quartz vein cuts Tertiary volcanic rocks .

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Yentna

Comments on the workings information

  • Workings / Exploration = Extent of exploration is apparently only the collection of a surface grab sample. Analysis of the float sample yielded 1,500 ppm Cu and less than 10 ppm Sn (Miller and others, 1978).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012182
USGS Alaska Resource Data File ARDF TK086

Bibliographic references

  • Deposit

    Miller, R.J., Cooley, E.F., O'Leary, R.M., Garmezy, larry, Csejtey, Bela, Jr., Smith, T.E., and Cleveland, M.N., 1978, Analysis of geochemical samples from the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-file Report 78-1052, 279 p.

  • Deposit

    Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and table describing metalliferous and selected nonmetalliferous mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-B, 20 p., 1 plate, scale 1:250,000.

  • Deposit

    Singer, D.A., Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and discussion of the metalliferous and selected nonmetalliferous mineral resources of the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-file Report 78-588-Q, 33 p., 1 plate, scale 1:250,000.

  • Deposit

    Cobb, E.H., and Csejtey, Bela, Jr., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-716, 63 p.

Comments on the references

  • Primary Reference = Miller and others, 1978

Reporter information

Type Date Name Affiliation Comment
Reporter 05-AUG-98 Bickerstaff, Damon U.S. Geological Survey